HIGH PERFORMANCE ACTIVE SUBWOOFER MODULE ELODIS-SUB DSP-2500 4to8 (02-2010) Copyright by Elodis Subwoofer 1
Copyright by Elodis Subwoofer 2 ELODIS-SUB DSP-2500 4to8 Key Features: Optimized for speaker impedances from 4 Ohms up to 8 Ohms (4to8) Also available optimized for speaker impedances from 2 Ohms up to 4 Ohms (2to4) Power ratings up to 2500 Watts, minimum power compression at rated power (page 13) Class D UCD -Technology High performance DSP for a wide range of user-programmable settings (via USB) High performance large-sized linear power supplies (amplifier/dsp) Two-part massive aluminium cabinet (electronics module - transformer module) TSRL (transformer switching relay, German patent) avoidance of high inrush current The electronics module has an air-tight back chamber Separate chamber inside the subwoofer cabinet neither needed nor recommended Control panel (air-tight) for mounting on the front of loudspeaker cabinet Exclusively top-quality and reliable parts and materials Extensive protective circuits Sophisticated cooling system for different listening habits/environmental conditions up to 55 C heatsink temperature - convection cooling and 2 unaudible miniature fans for partial forced cooling above 55 C heatsink temperature - forced cooling by 2 super-silent 80 mm fans 210-240 Volts/50-60 Hz versions and 105-120 Volts/50-60 Hz versions available Engineered and precisely hand-crafted and tested in Austria (EU)
Copyright by Elodis Subwoofer 3 ELODIS-SUB DSP-2500 4to8 Further Features: Very rugged mechanical and electrical construction for increased safeness and extended durability Single-stage EMC mains filter, 20 A, low-loss, low leakage current DC-filter for toroidal transformer Partly modular pre-assembled Connectors are high quality parts from NEUTRIK XLR and RCA input and output connectors Input selector XLR or RCA, switch setting RCA generates a pseudo-balanced input signal by relay-circuit Following loudspeaker-setups can be configured by DSP software: 1) mono 2-way (sub/passive top) by using one input signal 2) mono 3-way (sub/2-way active top) by using one input signal 3) mono sub/stereo top (by using a stereo input signal) 4) mono sub with filtering or without filtering 5) mono fullrange Precise CNC machined aluminium chassis parts Internal wiring by using of multi standard wires from LAPP and wires from STERNER KABEL and ALPHA WIRE Power consumption standby (switch control panel) = 0,5 Watts Power consumption switched off (2-pole main switch, electronics module) = 0 Watts
Copyright by Elodis Subwoofer 4 ELODIS-SUB DSP-2500 4to8 front view electronics module Power cord (LAPP FD891 3G2.5, BALS grounded plug, NEUTRIK 32A powercon ) Standard length 3 m, any length on request View built-in amplifier
ELODIS-SUB DSP-2500 4to8 side-back view electronics module Size front panel WxHxD = 372 x 448.5 x 10 mm, r = 5 mm Cutout dimensions = 329 x 406.5 mm, r = 4 mm Screws = 12 x M6 Allen screws Copyright by Elodis Subwoofer 5
Copyright by Elodis Subwioofer 6 ELODIS-SUB DSP-2500 4to8 view transformer module The transformer module is designed as part of the loudspeaker (subwoofer) cabinet and must be mounted inside the loudspeaker cabinet in horizontal position! 6 silent blocks 25x15mm (M8) - bottom 1 silent block 30x22mm (M8) - top
ELODIS-SUB DSP-2500 4to8 inside view electronics module Copyright by Elodis Subwoofer 7
ELODIS-SUB DSP-2500 4to8 inside view transformer module Copyright by Elodis Subwoofer 8
Copyright by Elodis Subwoofer 9 ELODIS-SUB DSP-2500 4to8 inside view transformer module View Protection against accidental contact Acoustic decoupling from chassis in all directions (embedded in silicone rubber) High efficiency optimized custom-made toroidal transformer (German product) DC-filter For optimum bass performance
Copyright by Elodis Subwoofer 10 ELODIS-SUB DSP-2500 4to8 detail transformer module AVOIDS high inrush current Extended duration of transformer and electronics parts Avoids blown fuses due to high inrush current Fuses must not be oversized TSRL (transformer switching relay) For detailed information: (very interesting sites!) www.fsm-elektronik.de www.emeko.de
Copyright by Elodis Subwoofer 11 ELODIS-SUB DSP-2500 4to8 control panel WxHxD = 120x80x100 mm thickness = 4 mm, curve radius = 3,5 mm; Cutout dimensions = 100x52 mm, r = 3 mm M4x16 Allen-countersunk screws supplied Connection electronics module to control panel
Copyright by Elodis Subwoofer 12 Accessory kit includes 6 made-up cabels; Any length on request (standard length 1 metre, any other length on request) Assembled with: - High quality connectors from NEUTRIK - High quality multi standard cables from LAPP - Rugged high quality grounded plug from BALS Exclusively these cables may be used! ELODIS-SUB DSP-2500 4to8 Connection electronics module to transformer module
Copyright by Elodis Subwoofer 13 ELODIS-SUB DSP-2500 4to8 Technical details (1): Amplifier: Class D UCD Technology Power ratings: TRUE SINE WAVE AVERAGE POWER Please notice: The following power ratings are somewhat different (conservative) to other published power ratings but much more practice-oriented for subwoofer applications (measurement shows stiffness of power supply) Vrms based calculating (P=Vrms 2 /R) by using sine steps Procedure: sine steps 500 ms on 500 ms stop (below 4 Ohms 250 ms on 500 ms stop) - and so on, 1/6 oct, 30-5000 Hz*), additional measurement at 50 Hz for power ratings @ 50 Hz continuous 5 s minimum, pre-conditioned with several series of measurements at rated power measured at 230 Volts/50 Hz, load precision high power ohmic resistors, environmental temperature 25 C: *) 30-5000 Hz is the chosen bandwidth for power measurements. Using music signals the amplifier is able to handle frequencies down to below 10 Hz masterfully also at very high power levels 2500 Watts/2.7 Ohms @ 50 Hz, THD = 0,5%, THD 0,5% 30-5000 Hz 2300 Watts/3.15 Ohms @ 50 Hz, THD = 0,5%, THD 0,5% 30-5000 Hz 2000 Watts/4 Ohms @ 50 Hz, THD = 0,5%, THD 0,5% 30-5000 Hz 1500 Watts/5.4 Ohms @ 50 Hz, THD = 0,5%, THD 0,5% 30-5000 Hz 1050 Watts/8 Ohms @ 50 Hz, THD = 0,5%, THD 0,5% 30-5000 Hz 550 Watts/16 Ohms @ 50 Hz, THD = 0,5%, THD 0,5% 30-5000 Hz Clipping-LED begins to flash slightly below rated power! Minimum load should be around 3 Ohms for version 4to8 (see pages 18,19) It is recommended to use rated power for maximum 1 second continuous by using sine wave signals (see pages 18,19)
Copyright by Elodis Subwoofer 14 ELODIS-SUB DSP-2500 4to8 Technical details (2): Amplifier: Output impedance: max. 0.01 Ω < 1 khz Efficiency: 92% Voltage gain: 34 db Frequency response: 10-50000 Hz, +0/-3 db, all loads Current limit: 50 Ampere Output noise: typ. 30 µ Volts, 20-20000 Hz, unweighted S/N ratio unweighted > 100 db (1 Watt/8 Ohms), > 127 db at rated power General: No automatic switch-on/switch-off circuits are implemented to avoid unintended switch-on/switch-off artefacts while listening music. This active module can be switched in a standby mode by using the power switch on the control panel (mounted on the front of the loudspeaker cabinet). Power consumption at standby mode is very low 0,5 Watts! No further remote controls are provided. The 2-pole main switch on the electronics module will power-off this unit completely (when not in use for a longer time period). Power consumption at this mode is 0 Watt. This active module is not equipped with measurement software or automatic measurement software as standard. For best possible results all settings should be done and verified by hand based on measurement data. Nevertheless an advanced and convenient measurement software including an optimizer is available on request.
Copyright by Elodis Subwoofer 15 DSP: ELODIS-SUB DSP-2500 4to8 Technical details (3): High performance Burr-Brown converters; AD8620 op-amp 24 bit resolution 96 khz sampling frequency 76 bit processor precision 48 biquads total processing filters (IIR filters) Latency 1ms Input impedance, balanced = 10 kω Output impedance < 50 Ω Signal to Noise Ratio = 110 db Input voltage, peak to peak, 0dB = 4 Volts Output voltage, peak to peak, 0dB = 12 Volts Easy to handle software (USB Dongle-key) included Import of measurement data (textfile), programming while listening (included measuring software with optimizer on request)
Copyright by Elodis Subwoofer 16 ELODIS-SUB DSP-2500 4to8 Technical details (4): Temperature rise: Amplifier: Temperature below air inlet of the electronics module at 25 C environmental temperature: (module not built-in, temperature rise of the built-in module is depending on the chosen enclosure typ and the enclosure volume but will not increases appreciable) Idle: after 1 hour 36,5 C Load 100 W resistive 4 Ω, continuous 50 Hz sine wave (5 A rms), 1 hour additional: 40 C Load 200 W resistive 4 Ω, continuous 50 Hz sine wave (7 A rms), 1 hour additional: 43,5 C Load 300 W resistive 4 Ω, continuous 50 Hz sine wave (8,65 A rms), 1 hour additional: 47 C Load 400 W resistive 4 Ω, continuous 50 Hz sine wave (10 A rms), 10 minutes additional: 50,5 C 80 mm fans start up = switching threshold of these fans = 55 C heatsink temperature of the built-in amplifier module Cycle of operation (fans) at this load: 8 minutes off, 10 minutes on, and so on These fans are nearly unaudible also in a veryquietambient at shortdistances. Transformer: Transformer temperature inside the closed transformer cabinet at 25 C environmental temperature: Idle: 36 C (temporary max.) Load 200 W resistive, continuous 50 Hz sine wave, after 3 hours: 38 C (temporary max.) No clearly temperature rise measurable on the transformer cabinet surface up to 400 Watts Protection: Overvoltage, overcurrent, DC, overheat (85 C heatsink temperature), shorted output Protection circuits are self-resetting. When the cause of the failure has been removed, the amplifier will starts again. Warning LEDs: Clipping, overheat, amplifier failure
Copyright by Elodis Subwoofer 17 ELODIS-SUB DSP-2500 4to8 Technical details (5): Power consumption: Max. 2400 VA long-term (3500 VA short-term), idle = 57 Watts, standby = 0.5 Watts, off = 0 Watts Required AC Mains: 230 Volts version: 210 240 Volts, 50-60 Hz, 115 Volts version: 105-120 Volts, 50-60 Hz AC Line Connectors: powercon 32A to chassis, BALS 16A grounded plug to power line (CEE 7/7), LAPP FD 891 powercon 20A electronics module to transformer module, LAPP FD 891 Loudspeaker cables: Loudspeaker cables are pre-assembled with 50 A speakon connectors from NEUTRIK and two twisted pairs of AWG 14 wires (standard length 1 metre, any other on request). These two twisted pairs can be twisted and parallel-connected to supply one drive unit. Fuses (user serviceable, front panel): 230 Volts Version - Main: T10A time lag, 250V, 12V-Supply: T0.5A time lag, 250 Volts 115 Volts Version - Main: T20A time lag, 250V, 12V-Supply: T1A time lag, 250 Volts Main = 6,3 x 32 mm, 12V-Supply = 5 x 20 mm Dimensions: Electronics Module: WxHxD = 372 x 448.5 x 168 mm, net weight = 17 kg (37,5 pounds) depth without front panels and handles = 131 mm Transformer Module: WxHxD = 278 x 165.5/130 (w/wo silent blocks) x 316 mm, net weight = 18 kg (40 pounds) Control Panel: WxHxD = 120 x 80 x 100 mm, net weight = 650 grams (1,4 pounds)
Copyright by Elodis Subwoofer 18 ELODIS-SUB DSP-2500 4to8 Some useful information (1) Amplifier driven at loads below 3 Ohms: This amplifier is able to drive loads down to 1 Ω. But notice the following recommendations: At very low impedances the amplifier shuts down at the current limit of 50 Ampere (Hiccup mode after limiting for 40ms) High continuous sine wave power levels (not recommended, = no proper use) are able: to blow the unit main fuse (T10A, time lag, 250V) to blow power line fuses to blow the 2 internal rail fuses (F16A, quick-acting, 250V) to overheat the amplifier (amp shuts down at 85 C heatsink temperature) If high power levels at very low impedances (around 2 Ohms or less) are required continual, the version ELODIS-SUB DSP-2500 2to4 could be a better option. The only different to the 4to8 version are the lower rail voltages (less heating). Fans: The two 80 mm fans are implemented to reduce heating at higher environmental temperatures and at the same time high continuous power levels. The fans will never start up at accepted listening habits. Please note: By calculating a crest factor of 12 db (music program, dynamic compressed) the average power will be around 200 300 Watts at rated power (clipping LED begins to flash). The fans will start up at continuous sine wave power levels > 400 Watts (4 Ohms) at 25 C environmental temperature. The fans are decoupled from chassis. Due to the optimized internal airflow super-silent (low speed) fans can be used.
Copyright by Elodis Subwoofer 19 ELODIS-SUB DSP-2500 4to8 Some useful information (2) Do not test the ampifier by using continuous sine wave signals! That is not what an audio amplifier is made for! High power ratings should be considered as welcome dynamic headroom When this amplifier will be measured take care that NO ONE of the amplifier outputs will be grounded to the measurement equipment or elsewhere directly due to the bridged topology of the amplifier!! Risk of damage! Measurements and maintenance may be done exclusively by qualified personnel!! Risk of electric shock and amplifier damage!! Do not drive the amplifier in permanent clipping mode (permanent lighting up clipping-led); In further consequence amplifier shuts down. When the clipping-led begins to flash reduce input level! To improve the sound performance up to the rated power no limiters are implemented Power ratings are specified at 230 Volts/50 Hz Increased or decreased voltages at the power supply line will increase or decrease the specified power ratings Do not use power strips! Use 1 wall power outlet for 1 ELODIS-SUB DSP-2500 High distorted power lines are able to decrease the performance of transformers This unit must be earthed/grounded (Class 1)
Copyright by Elodis Subwoofer 20 ELODIS-SUB DSP-2500 4to8 Measurements (1), Amp & DSP, RCA inputs, (no passive low pass output filters were used for measurements) IMD, load 8 Ohms resistive, 5 Volts RMS, two sine 60 Hz & 7000 Hz, 4:1
Copyright by Elodis Subwoofer 21 ELODIS-SUB DSP-2500 4to8 Measurements (2), Amp & DSP, RCA inputs, (no passive low pass output filters were used for measurements) IMD, load 8 Ohms resistive, 5 Volts, RMS two sine 19 KHz & 20 KHz, 1:1 IMD, load 8 Ohms resistive, 5 Volts RMS, two sine 18 KHz & 20 KHz, 1:1
Copyright by Elodis Subwoofer 22 ELODIS-SUB DSP-2500 4to8 Measurements (3), Amp & DSP, RCA inputs, (no passive low pass output filters were used for measurements) THD and THD+N, 1 khz load 8 Ohms resistive, 15 Volts RMS THD in % load 16 Ohms, resistive 0,5 Watts, 1 khz Blue = K2, Yellow = K3, Cyan = K4, Magenta = K5, Red = THD
Copyright by Elodis Subwoofer 23 ELODIS-SUB DSP-2500 4to8 Measurements (4), Amp & DSP, RCA inputs, (no passive low pass output filters were used for measurements) THD, load 16 Ohms resistive, 400 Watts, 1 khz, Blue = K2, Yellow = K3, Cyan = K4 Magenta = K5, Red = THD, Green = Frequency response % THD 0,5%, 1050 Watts, 50 Hz load 8 Ohms resistive, = rated power Blue = K2, Yellow = K3, Cyan = K4 Magenta = K5, Red = THD, Green = Frequency response
Copyright by Elodis Subwoofer 24 ELODIS-SUB DSP-2500 4to8 Measurements (5), Amp & DSP, RCA inputs, (no passive low pass output filters were used for measurements) % % THD 0,5%, at rated power, 50 Hz, 2000 Watts, load 4 Ohms resistive Blue = K2, Yellow = K3, Cyan = K4 Magenta = K5, Red = THD, Green = Frequency response THD in %, 1200 Watts, 1 khz load 2,7 Ohms resistive
Copyright by Elodis Subwoofer 25 ELODIS-SUB DSP-2500 4to8 Measurements (6), Amp & DSP, RCA inputs, (no passive low pass output filters were used for measurements) THD in % load 3.15 Ohms, resistive, 2300 Watts at 1 khz Blue = K2, Yellow = K3, Cyan = K4, Magenta = K5, Red = THD
Copyright by Elodis Subwoofer 26 ELODIS-SUB DSP-2500 4to8 Measurements (7), DSP User-programmable filters: Bessel, Butterworth, Linkwitz-Riley, Custom, Order 1-8, resolution 0,1 Hz; Delay (max 21ms); PEQs (14/ch) - resolution 0,01 Hz, Q = 0-25 (0,01 steps), Gain -20/+20 db (0,01 db steps); Notch, Allpass, HSF, LSF, Bass/Treble; Each output: Gain -122/+24 db, phase reverse, output muting Some recommendations regarding DSP settings Your immediate action should be to find the best possible position for your loudspeaker(s) Electronic room corrections should be done with a small number of targeted and carefully chosen adjustments based on 1/3 oct smoothed measurements. Filter orders should not be higher than needed. DSP - Example filter setting: LP 80 Hz, Butterworth 5th, HP 80 Hz, Butterworth 5th
Copyright by Elodis Subwoofer 27 ELODIS-SUB DSP-2500 4to8 Measurements (8), DSP DSP - Example Application Subwoofer-Mainspeaker: Small listening room with poor (but typical) room conditions Crossover frequencies = LP 80 Hz, Butterworth 5th, HP 80 Hz, Butterworth 5th Targeted usage of 5 EQ s for subwoofer and 10 EQ s for main-speaker results in a (as was intended) slightly falling and well-balanced summarized frequency response. Measurements 1/3 oct smoothed, all measurements at listening area red = subwoofer unequalized 1/3-oct., blue = main speaker unequalized 1/3-oct. magenta = equalized and summarized frequency response 1/3-okt. smoothed white = equalized subwoofer and summarized frequency response 1/1-oct. smoothed
Copyright by Elodis Subwoofer 28 ELODIS-SUB DSP-2500 4to8 This active module is designed for very high performance home audio subwoofer/active-loudspeaker applications. The version 4to8 is optimized to supplies: One subwoofer drive unit with a nominal impedance 4 Ω Two parallel-connected subwoofer drive units with nominal impedances 8 Ω Several parallel-serial-connected drive units with a total nominal impedance 4 Ω To adapt a subwoofer best possible to the whole system (room conditions, remaining audio equipment) is not an easy issue! Many users fail! Therefore: Users should have the necessary basic skills and experiences in measuring of audio equipment and room acoustics as well as generally in electroacoustics! Appropriately applied this active module will provides an enormous powerful and accurate bass performance to any above recommended subwoofer drive unit(s) as well as generally amazing sound performance to all connected loudspeakers due to the wide-ranging adaptabilities and the high performance of the built-in DSP All cables can be supplied as needed (standard length 1 m) Different colors for the chassis parts are possible All required installation parts (screws, ) supplied
Copyright by Elodis Subwoofer 29 ELODIS-SUB DSP-2500 4to8 Rev A: 01-2010 Rev B: 02-2010 DC-filter added Specifications are subject to change without notice (brochure will be updated) Price ex works: 5.765,- excl. VAT, 6.918 incl. 20% VAT Warranty: 3 Years Copyright 2010 by Franz Hinterlehner Elodis Subwoofer All images and texts used on this brochure as well as the layout are protected by copyright. All brands cited on this brochure are registered trademarks or brand names, even though this may not be stated individually in each case.
Created by Franz Hinterlehner Am Silberberg 1 A-3375 Krummnussbaum Mobil: +43 (0) 676 738 2661 Mail: hinterlehner@elodis-subwoofer.com Web: www.elodis-subwoofer.com Copyright by Elodis Subwoofer 30